My timeline:
Biometrics was already done last application ( last application was rejected)
re-submitted an application: April 29, 2020 (SDS application)
Started attending online classes: May 2020
Sent new LOA for Fall term: August 6, 2020
Attended fall term online classes: September 2020
AIP: September 10, 2020
Medical request: Dec. 7, 2020
Passport request: Jan. 5, 2021